does it spook deer.im sure it does some and not others.i think it makes big bucks weary...i get very few big buck pics even when i know there in the area or if i see them hunting in a certain area.they seem to get leary after the camera goes off if you leave it in the same spot for to long.so yes it spooks some deer and not others.especially during hunting season.winter and spring im not sure about.well thats my feeling about it.